RANKING · 2020 CENSUS · 101 SHOWN OF 101

Highest Welsh population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Welsh ancestry (2023 American Community Survey). A concentration measure: Welsh residents as a percentage of total population. This list covers the 101 counties in Illinois that qualify, ranked against each other statewide.

IllinoisAll states All rankings

SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPWELSH SHAREVS 2000

01Piatt County, ILIL16,7911.4%–

02Saline County, ILIL22,7721.2%–

03Bond County, ILIL16,9591.2%–

04Montgomery County, ILIL28,0761.2%–

05Perry County, ILIL20,1601.1%–

06Hamilton County, ILIL7,8591.1%–

07Henderson County, ILIL5,9841.1%–

08Iroquois County, ILIL26,1501.0%–

09Coles County, ILIL46,6071.0%–

10Franklin County, ILIL36,9160.9%–

11Warren County, ILIL16,2220.9%–

12Macon County, ILIL99,3000.9%–

13Jo Daviess County, ILIL21,5940.9%–

14Bureau County, ILIL32,5100.8%–

15Williamson County, ILIL67,2250.8%–

16Mason County, ILIL12,4110.8%–

17Woodford County, ILIL38,1110.8%–

18Fulton County, ILIL32,9010.8%–

19Marshall County, ILIL11,4730.8%–

20Clark County, ILIL15,1140.8%–

21Morgan County, ILIL32,5150.8%–

22Peoria County, ILIL178,5530.8%–

23Richland County, ILIL15,2190.8%–

24Menard County, ILIL11,8630.8%–

25Jackson County, ILIL52,5010.8%–

26Logan County, ILIL27,1820.7%–

27Gallatin County, ILIL4,6160.7%–

28Tazewell County, ILIL130,0490.7%–

29Sangamon County, ILIL194,1700.7%–

30Clay County, ILIL12,7930.7%–

31Madison County, ILIL263,1100.7%–

32Rock Island County, ILIL141,8690.7%–

33Hardin County, ILIL3,5880.6%–

34Washington County, ILIL13,5640.6%–

35Henry County, ILIL48,0950.6%–

36Boone County, ILIL53,5680.6%–

37Moultrie County, ILIL14,3710.6%–

38White County, ILIL13,2500.6%–

39Douglas County, ILIL19,8800.6%–

40Stephenson County, ILIL43,2200.6%–

41Vermilion County, ILIL71,2590.6%–

42Lawrence County, ILIL13,7900.6%–

43Edwards County, ILIL5,8980.6%–

44Champaign County, ILIL209,9720.6%–

45Hancock County, ILIL16,8030.6%–

46Mercer County, ILIL15,2290.6%–

47Jefferson County, ILIL36,1470.6%–

48Adams County, ILIL64,2670.6%–

49McLean County, ILIL171,4190.6%–

50Schuyler County, ILIL6,6570.6%–

51Pope County, ILIL3,6720.6%–

52St. Clair County, ILIL250,7080.5%–

53Randolph County, ILIL29,9210.5%–

54Kankakee County, ILIL105,5250.5%–

55Jasper County, ILIL9,0320.5%–

56Union County, ILIL16,6560.5%–

57Putnam County, ILIL5,6190.5%–

58Alexander County, ILIL4,5700.5%–

59DeKalb County, ILIL101,8350.5%–

60Macoupin County, ILIL43,7480.5%–

61Monroe County, ILIL34,8400.5%–

62Kendall County, ILIL145,4700.5%–

63Winnebago County, ILIL283,6740.5%–

64Knox County, ILIL47,7670.5%–

65Christian County, ILIL33,4430.4%–

66Pulaski County, ILIL4,8200.4%–

67McHenry County, ILIL317,7510.4%–

68Crawford County, ILIL18,6480.4%–

69Ford County, ILIL13,2160.4%–

70Effingham County, ILIL34,5190.4%–

71Ogle County, ILIL51,3990.4%–

72DuPage County, ILIL934,2980.4%–

73Wayne County, ILIL15,8820.3%–

74Wabash County, ILIL10,9070.3%–

75Brown County, ILIL6,4010.3%–

76LaSalle County, ILIL107,7730.3%–

77Whiteside County, ILIL54,1210.3%–

78Will County, ILIL712,2530.3%–

79Marion County, ILIL36,3820.3%–

80Kane County, ILIL525,7570.3%–

81Lake County, ILIL719,3390.3%–

82Johnson County, ILIL13,3630.3%–

83Lee County, ILIL32,9140.3%–

84Carroll County, ILIL15,4190.3%–

85Shelby County, ILIL20,5760.3%–

86Stark County, ILIL5,3190.3%–

87Livingston County, ILIL35,0570.3%–

88McDonough County, ILIL25,9160.3%–

89Jersey County, ILIL21,1600.3%–

90De Witt County, ILIL15,1180.3%–

91Grundy County, ILIL54,0520.3%–

92Cumberland County, ILIL10,2080.3%–

93Cook County, ILIL5,194,6250.2%–

94Fayette County, ILIL20,7900.2%–

95Cass County, ILIL12,4630.2%–

96Edgar County, ILIL16,3230.2%–

97Clinton County, ILIL37,1280.2%–

98Greene County, ILIL11,3130.2%–

99Scott County, ILIL4,8660.1%–

100Calhoun County, ILIL4,3000.1%–

101Pike County, ILIL14,2310.1%–

SHOWING 1–101 OF 101

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES